US Democratic presidential candidate Obama and New Mexico Governor Richardson attend campaign rally in Portland

 
US Democratic presidential candidate Obama and New Mexico Governor Richardson attend campaign rally in Portland
US Democratic presidential candidate Senator Barack Obama (D-IL) (L) and New Mexico Governor Bill Richardson address a campaign rally in Portland, Oregon, March 21, 2008. Richardson endorsed Obama's bid for the Democratic nomination for U.S. president on Friday, in a big boost for the senator. REUTERS/Richard Clement (UNITED STATES) US PRESIDENTIAL CAMPAIGN 2008 (USA)